Tore Anderson has a new blog post on using UEFI with PXE remote boot over IPv6:
https://twitter.com/toreanderson/status/666176213271072768
http://blog.toreanderson.no/2015/11/16/ipv6-network-boot-with-uefi-and-ipxe.html
I’m glad they used PXE, I am not sure UEFI HTTP boot works with IPv6 yet, initial checkin was for IPv4 only. 🙂